Cutter



Sept. 13,V 1927. 1,642,372

G. KERNATS GUTTER File'd Nov. 16, 1925 l L. IIHIIB Z0" i 32, z W 'M 174 ma u V JZU'e/Q/o/f i l fifa/7gg Patented Sept. 13, 1927. f UNITED STATES PATE j GUSTAV KERNATS,VOF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF T0 FRED WISSIN- Nr OFFICE.;

GER, 0F CHICAGO, ILLINOIS,

CUTTER.

`Application filed November 16, 1925. Serial No. 69,542.

The invention relates to cutters and more particularly to cutters employed to produce a plane surface on wooden blocks or blocks of other materials.

The invention is specially-identified with the art of photo-engraving, where it becomes necessary to provide wooden blocks to which the zinc or copper plate is secured with plane surfaces.

It is an object of the invention to provide cutters with alarge cutting edge whereby the life of the cutters is considerably enhanced. y

A further object aims at providing cutters which may be reset to present new portions of the cutting edge to the material to be operated upon without necessitatingadjustinent of the cutter in the holding device.

VA still furtherobject aims at providing cutters which after a single adjustment in the holding device remain in such adjusted position and permit replacement of the operative portion of the cutter or resetting of the same without necessitating adjustment of the cutter as a whole in its holding device.

With these and other objects in view the invention comprises the means described in the specification, particularly pointed out in the claims forming a part thereof, andV illustrated in the accompanying drawing,

in which:

Figure 1 is a front view elevation ofva plurality of cutters secured in a holding de vice and constructed in accordance with my invention; n'

Figure 2 is a section on the line 3-3 of Figure 1;

Figure 3 is a front view of the operative portion of the cutter;

Figure 4 is a sectional plan view, the section being taken on line 5-5 of Figure 3; and y Figure 5 is a front view of a modiied form of the cutter arrangement.

The cutter comprises a shank portion 16 which terminates in a knee 17 extendingat an angle to the shank 16 and provided with a bore 18 at the free end for the reception of the operative portion of the bit presently to be described.

The bit comprises a tubular port-ion 19 provided with a head 20 in the shape of a frusto-cone, the head being cored out to lform a hollow chamber 21 ltapering with increasing diameter toward the lower end to provide a cutting edge 22 of circular form. The chamber 21 leads at the other end into a vertical bore 22 which extends through the tubular portion 19. The juncthreadedinto the knee 17 to Secure the bity tothe knee 17.

In use, the shank 16 is introduced into the aperture 13 of the disk 10, and upon proper adjustment of the cutter, the'set screw 15 is ltightened so as to secure the cutter in position. If, after considerable use, the portion of the cutting edge which slightly projects beyond the wheel 10, is wornout, and it becomes necessary to have a new portion of the cutting edge presented to the material to be operated upon, then the screw 24 is loosened and the head 20' is slightly turned, whereupon the screw 24 is tightened. Further adjustment of the cutter, however, is not necessary. If all of the portions of the cutting edge 22 have beenA used up and it becomes necessary to replace the bit, in such case, the screw 24 is again loosened, lthe bit 19 is removed and replaced by a new cutter and secured to the knee 17. This exchange may'be rapidly In Figure 5, a similar cutter is shown for .f

planing a horizontal surface. rlhe holding evice again comprises a disk 10 which holds a plurality of cutters 16a comprising shank portions 18a and knee portions 17 to the free end of which my improved bit 20 is secured. The disk 10 is secured to the upper end of a vertical shaft 32 to which rotation is imparted in any appropriate or conventional way.

` Vhile the invention has been particularly described in connection with photo-engraving, it is, of course, applicable to other arts and no limitation is intended as far as the use of the invention is concerned to which the same may be put. The drawings disclose preferred embodiments of the invention, but various changes and alterations may be made, and it is, therefore, not my intention of limiting myself to the details of construction as shown, but to include all variations, ie-zu 'migenents :ind alterations which fairly inli within the scope of tbe invention :is set forth in the appended claims.

I claim:

l. A cutting device, includingl in eombi nation, :i disk having apertures ibel'eiln :i bit bolder secured in snid apertures, and Comprising :i shank pei'ion, and :i knee extending at un angie to said shank portion, :1nd :L cil-cular bit udjustabiy mounted on. said knee.

Menem Ji. cutting; device, nr'iudng in combination, :L disk having apertures therein, :i bili bolder :ldjusstebly secured in said amper tures nud eoinin'ising :i Shank portion, :1nd L knee exteni'iing it :in :ingle to said sha-nk portion? :i circuler bitA mounted on said knee und n zbi'ended element passing Centrally ihrough said bit :1nd extending knee :ioi :nijusiiuent on said bit.

1n Witness whereof I niix my signature.

' GUSTAV KERNATS.

into said 20 

